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132 lines
3.0 KiB
Go
132 lines
3.0 KiB
Go
package logging
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// Custom logging hooks for powering our logs API.
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// Modeled after https://github.com/sirupsen/logrus/blob/master/hooks/test/test.go
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import (
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"math"
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"os"
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"sync"
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"time"
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rotatelogs "github.com/lestrrat-go/file-rotatelogs"
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"github.com/rifflock/lfshook"
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"github.com/sirupsen/logrus"
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logger "github.com/sirupsen/logrus"
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)
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const maxLogEntries = 500
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type OCLogger struct {
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Entries []logrus.Entry
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Warnings []logrus.Entry
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mu sync.RWMutex
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}
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var Logger *OCLogger
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var _level logrus.Level
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// Setup configures our custom logging destinations.
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func Setup(enableDebugOptions bool, enableVerboseLogging bool) {
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// Write logs to a file
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path := getLogFilePath()
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writer, _ := rotatelogs.New(
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path+".%Y%m%d%H%M",
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rotatelogs.WithLinkName(path),
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rotatelogs.WithMaxAge(time.Duration(86400)*time.Second),
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rotatelogs.WithRotationTime(time.Duration(604800)*time.Second),
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)
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logMapping := lfshook.WriterMap{
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logrus.InfoLevel: writer,
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logrus.DebugLevel: writer,
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logrus.TraceLevel: writer,
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logrus.WarnLevel: writer,
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logrus.ErrorLevel: writer,
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logrus.FatalLevel: writer,
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}
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logger.AddHook(lfshook.NewHook(
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logMapping,
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&logger.TextFormatter{},
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))
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if enableVerboseLogging {
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logrus.SetLevel(logrus.TraceLevel)
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} else {
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logrus.SetLevel(logrus.InfoLevel)
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}
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// Write to stdout console
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logger.SetOutput(os.Stdout)
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// Write to our custom logging hook for the log API
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_logger := new(OCLogger)
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logger.AddHook(_logger)
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if enableDebugOptions {
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logrus.SetReportCaller(true)
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}
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Logger = _logger
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}
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// Fire runs for every logging request.
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func (l *OCLogger) Fire(e *logger.Entry) error {
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// Store all log messages to return back in the logging API
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l.mu.Lock()
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defer l.mu.Unlock()
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// Append to log entries
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if len(l.Entries) > maxLogEntries {
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l.Entries = l.Entries[1:]
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}
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l.Entries = append(l.Entries, *e)
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if e.Level <= logger.WarnLevel {
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if len(l.Warnings) > maxLogEntries {
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l.Warnings = l.Warnings[1:]
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}
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l.Warnings = append(l.Warnings, *e)
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}
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return nil
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}
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// Levels specifies what log levels we care about.
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func (l *OCLogger) Levels() []logrus.Level {
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return logrus.AllLevels
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}
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// AllEntries returns all entries that were logged.
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func (l *OCLogger) AllEntries() []*logrus.Entry {
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l.mu.RLock()
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defer l.mu.RUnlock()
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// Make a copy so the returned value won't race with future log requests
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logCount := int(math.Min(float64(len(l.Entries)), maxLogEntries))
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entries := make([]*logrus.Entry, logCount)
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for i := 0; i < len(entries); i++ {
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// Make a copy, for safety
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entries[len(entries)-logCount:][i] = &l.Entries[i]
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}
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return entries
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}
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// WarningEntries returns all warning or greater that were logged.
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func (l *OCLogger) WarningEntries() []*logrus.Entry {
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l.mu.RLock()
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defer l.mu.RUnlock()
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// Make a copy so the returned value won't race with future log requests
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logCount := int(math.Min(float64(len(l.Warnings)), maxLogEntries))
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entries := make([]*logrus.Entry, logCount)
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for i := 0; i < len(entries); i++ {
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// Make a copy, for safety
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entries[len(entries)-logCount:][i] = &l.Warnings[i]
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}
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return entries
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}
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